Choledochoduodenal fistula: a rare complication of duodenal ulcer.

Spontaneous biliary enteric fistula caused by duodenal ulcer is a rare phenomenon. In most cases it is diagnosed incidentally, because it seldom gives clinical symptoms. The fistula per se is not an indication for surgery. When surgery is recommended, the operation of choice is vagotomy and antrectomy. A short review of the literature with three of our cases is presented.